“The sense is that many of the suicide bombers are in fact foreign jihadists, not Iraqis, for the most part,” the official said, speaking to reporters on background. “The ones that we’ve gotten our hands on are certainly foreigners,” he pointed out. Foreign insurgents operating in Iraq seem to be coming from about 25 countries, the official noted. The majority, he observed, are from Syria, Saudi Arabia and Iran. However, U.S. military analysts in Iraq “don’t see that foreign fighters have become a significant force in the insurgency,” the official noted. Out of about 10,000 detainees now being held in...